1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* 3 * USB Communications Device Class (CDC) definitions 4 * 5 * CDC says how to talk to lots of different types of network adapters, 6 * notably ethernet adapters and various modems. It's used mostly with 7 * firmware based USB peripherals. 8 */ 9 10#ifndef __UAPI_LINUX_USB_CDC_H 11#define __UAPI_LINUX_USB_CDC_H 12 13#include <linux/types.h> 14 15#define USB_CDC_SUBCLASS_ACM 0x02 16#define USB_CDC_SUBCLASS_ETHERNET 0x06 17#define USB_CDC_SUBCLASS_WHCM 0x08 18#define USB_CDC_SUBCLASS_DMM 0x09 19#define USB_CDC_SUBCLASS_MDLM 0x0a 20#define USB_CDC_SUBCLASS_OBEX 0x0b 21#define USB_CDC_SUBCLASS_EEM 0x0c 22#define USB_CDC_SUBCLASS_NCM 0x0d 23#define USB_CDC_SUBCLASS_MBIM 0x0e 24 25#define USB_CDC_PROTO_NONE 0 26 27#define USB_CDC_ACM_PROTO_AT_V25TER 1 28#define USB_CDC_ACM_PROTO_AT_PCCA101 2 29#define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3 30#define USB_CDC_ACM_PROTO_AT_GSM 4 31#define USB_CDC_ACM_PROTO_AT_3G 5 32#define USB_CDC_ACM_PROTO_AT_CDMA 6 33#define USB_CDC_ACM_PROTO_VENDOR 0xff 34 35#define USB_CDC_PROTO_EEM 7 36 37#define USB_CDC_NCM_PROTO_NTB 1 38#define USB_CDC_MBIM_PROTO_NTB 2 39 40/*-------------------------------------------------------------------------*/ 41 42/* 43 * Class-Specific descriptors ... there are a couple dozen of them 44 */ 45 46#define USB_CDC_HEADER_TYPE 0x00 /* header_desc */ 47#define USB_CDC_CALL_MANAGEMENT_TYPE 0x01 /* call_mgmt_descriptor */ 48#define USB_CDC_ACM_TYPE 0x02 /* acm_descriptor */ 49#define USB_CDC_UNION_TYPE 0x06 /* union_desc */ 50#define USB_CDC_COUNTRY_TYPE 0x07 51#define USB_CDC_NETWORK_TERMINAL_TYPE 0x0a /* network_terminal_desc */ 52#define USB_CDC_ETHERNET_TYPE 0x0f /* ether_desc */ 53#define USB_CDC_WHCM_TYPE 0x11 54#define USB_CDC_MDLM_TYPE 0x12 /* mdlm_desc */ 55#define USB_CDC_MDLM_DETAIL_TYPE 0x13 /* mdlm_detail_desc */ 56#define USB_CDC_DMM_TYPE 0x14 57#define USB_CDC_OBEX_TYPE 0x15 58#define USB_CDC_NCM_TYPE 0x1a 59#define USB_CDC_MBIM_TYPE 0x1b 60#define USB_CDC_MBIM_EXTENDED_TYPE 0x1c 61 62/* "Header Functional Descriptor" from CDC spec 5.2.3.1 */ 63struct usb_cdc_header_desc { 64 __u8 bLength; 65 __u8 bDescriptorType; 66 __u8 bDescriptorSubType; 67 68 __le16 bcdCDC; 69} __attribute__ ((packed)); 70 71/* "Call Management Descriptor" from CDC spec 5.2.3.2 */ 72struct usb_cdc_call_mgmt_descriptor { 73 __u8 bLength; 74 __u8 bDescriptorType; 75 __u8 bDescriptorSubType; 76 77 __u8 bmCapabilities; 78#define USB_CDC_CALL_MGMT_CAP_CALL_MGMT 0x01 79#define USB_CDC_CALL_MGMT_CAP_DATA_INTF 0x02 80 81 __u8 bDataInterface; 82} __attribute__ ((packed)); 83 84/* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */ 85struct usb_cdc_acm_descriptor { 86 __u8 bLength; 87 __u8 bDescriptorType; 88 __u8 bDescriptorSubType; 89 90 __u8 bmCapabilities; 91} __attribute__ ((packed)); 92 93/* capabilities from 5.2.3.3 */ 94 95#define USB_CDC_COMM_FEATURE 0x01 96#define USB_CDC_CAP_LINE 0x02 97#define USB_CDC_CAP_BRK 0x04 98#define USB_CDC_CAP_NOTIFY 0x08 99 100/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */ 101struct usb_cdc_union_desc { 102 __u8 bLength; 103 __u8 bDescriptorType; 104 __u8 bDescriptorSubType; 105 106 __u8 bMasterInterface0; 107 __u8 bSlaveInterface0; 108 /* ... and there could be other slave interfaces */ 109} __attribute__ ((packed)); 110 111/* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */ 112struct usb_cdc_country_functional_desc { 113 __u8 bLength; 114 __u8 bDescriptorType; 115 __u8 bDescriptorSubType; 116 117 __u8 iCountryCodeRelDate; 118 __le16 wCountyCode0; 119 /* ... and there can be a lot of country codes */ 120} __attribute__ ((packed)); 121 122/* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */ 123struct usb_cdc_network_terminal_desc { 124 __u8 bLength; 125 __u8 bDescriptorType; 126 __u8 bDescriptorSubType; 127 128 __u8 bEntityId; 129 __u8 iName; 130 __u8 bChannelIndex; 131 __u8 bPhysicalInterface; 132} __attribute__ ((packed)); 133 134/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */ 135struct usb_cdc_ether_desc { 136 __u8 bLength; 137 __u8 bDescriptorType; 138 __u8 bDescriptorSubType; 139 140 __u8 iMACAddress; 141 __le32 bmEthernetStatistics; 142 __le16 wMaxSegmentSize; 143 __le16 wNumberMCFilters; 144 __u8 bNumberPowerFilters; 145} __attribute__ ((packed)); 146 147/* "Telephone Control Model Functional Descriptor" from CDC WMC spec 6.3..3 */ 148struct usb_cdc_dmm_desc { 149 __u8 bFunctionLength; 150 __u8 bDescriptorType; 151 __u8 bDescriptorSubtype; 152 __u16 bcdVersion; 153 __le16 wMaxCommand; 154} __attribute__ ((packed)); 155 156/* "MDLM Functional Descriptor" from CDC WMC spec 6.7.2.3 */ 157struct usb_cdc_mdlm_desc { 158 __u8 bLength; 159 __u8 bDescriptorType; 160 __u8 bDescriptorSubType; 161 162 __le16 bcdVersion; 163 __u8 bGUID[16]; 164} __attribute__ ((packed)); 165 166/* "MDLM Detail Functional Descriptor" from CDC WMC spec 6.7.2.4 */ 167struct usb_cdc_mdlm_detail_desc { 168 __u8 bLength; 169 __u8 bDescriptorType; 170 __u8 bDescriptorSubType; 171 172 /* type is associated with mdlm_desc.bGUID */ 173 __u8 bGuidDescriptorType; 174 __u8 bDetailData[0]; 175} __attribute__ ((packed)); 176 177/* "OBEX Control Model Functional Descriptor" */ 178struct usb_cdc_obex_desc { 179 __u8 bLength; 180 __u8 bDescriptorType; 181 __u8 bDescriptorSubType; 182 183 __le16 bcdVersion; 184} __attribute__ ((packed)); 185 186/* "NCM Control Model Functional Descriptor" */ 187struct usb_cdc_ncm_desc { 188 __u8 bLength; 189 __u8 bDescriptorType; 190 __u8 bDescriptorSubType; 191 192 __le16 bcdNcmVersion; 193 __u8 bmNetworkCapabilities; 194} __attribute__ ((packed)); 195 196/* "MBIM Control Model Functional Descriptor" */ 197struct usb_cdc_mbim_desc { 198 __u8 bLength; 199 __u8 bDescriptorType; 200 __u8 bDescriptorSubType; 201 202 __le16 bcdMBIMVersion; 203 __le16 wMaxControlMessage; 204 __u8 bNumberFilters; 205 __u8 bMaxFilterSize; 206 __le16 wMaxSegmentSize; 207 __u8 bmNetworkCapabilities; 208} __attribute__ ((packed)); 209 210/* "MBIM Extended Functional Descriptor" from CDC MBIM spec 1.0 errata-1 */ 211struct usb_cdc_mbim_extended_desc { 212 __u8 bLength; 213 __u8 bDescriptorType; 214 __u8 bDescriptorSubType; 215 216 __le16 bcdMBIMExtendedVersion; 217 __u8 bMaxOutstandingCommandMessages; 218 __le16 wMTU; 219} __attribute__ ((packed)); 220 221/*-------------------------------------------------------------------------*/ 222 223/* 224 * Class-Specific Control Requests (6.2) 225 * 226 * section 3.6.2.1 table 4 has the ACM profile, for modems. 227 * section 3.8.2 table 10 has the ethernet profile. 228 * 229 * Microsoft's RNDIS stack for Ethernet is a vendor-specific CDC ACM variant, 230 * heavily dependent on the encapsulated (proprietary) command mechanism. 231 */ 232 233#define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00 234#define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01 235#define USB_CDC_REQ_SET_LINE_CODING 0x20 236#define USB_CDC_REQ_GET_LINE_CODING 0x21 237#define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22 238#define USB_CDC_REQ_SEND_BREAK 0x23 239#define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS 0x40 240#define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER 0x41 241#define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER 0x42 242#define USB_CDC_SET_ETHERNET_PACKET_FILTER 0x43 243#define USB_CDC_GET_ETHERNET_STATISTIC 0x44 244#define USB_CDC_GET_NTB_PARAMETERS 0x80 245#define USB_CDC_GET_NET_ADDRESS 0x81 246#define USB_CDC_SET_NET_ADDRESS 0x82 247#define USB_CDC_GET_NTB_FORMAT 0x83 248#define USB_CDC_SET_NTB_FORMAT 0x84 249#define USB_CDC_GET_NTB_INPUT_SIZE 0x85 250#define USB_CDC_SET_NTB_INPUT_SIZE 0x86 251#define USB_CDC_GET_MAX_DATAGRAM_SIZE 0x87 252#define USB_CDC_SET_MAX_DATAGRAM_SIZE 0x88 253#define USB_CDC_GET_CRC_MODE 0x89 254#define USB_CDC_SET_CRC_MODE 0x8a 255 256/* Line Coding Structure from CDC spec 6.2.13 */ 257struct usb_cdc_line_coding { 258 __le32 dwDTERate; 259 __u8 bCharFormat; 260#define USB_CDC_1_STOP_BITS 0 261#define USB_CDC_1_5_STOP_BITS 1 262#define USB_CDC_2_STOP_BITS 2 263 264 __u8 bParityType; 265#define USB_CDC_NO_PARITY 0 266#define USB_CDC_ODD_PARITY 1 267#define USB_CDC_EVEN_PARITY 2 268#define USB_CDC_MARK_PARITY 3 269#define USB_CDC_SPACE_PARITY 4 270 271 __u8 bDataBits; 272} __attribute__ ((packed)); 273 274/* table 62; bits in multicast filter */ 275#define USB_CDC_PACKET_TYPE_PROMISCUOUS (1 << 0) 276#define USB_CDC_PACKET_TYPE_ALL_MULTICAST (1 << 1) /* no filter */ 277#define USB_CDC_PACKET_TYPE_DIRECTED (1 << 2) 278#define USB_CDC_PACKET_TYPE_BROADCAST (1 << 3) 279#define USB_CDC_PACKET_TYPE_MULTICAST (1 << 4) /* filtered */ 280 281 282/*-------------------------------------------------------------------------*/ 283 284/* 285 * Class-Specific Notifications (6.3) sent by interrupt transfers 286 * 287 * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications 288 * section 3.6.2.1 table 5 specifies ACM notifications, accepted by RNDIS 289 * RNDIS also defines its own bit-incompatible notifications 290 */ 291 292#define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00 293#define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01 294#define USB_CDC_NOTIFY_SERIAL_STATE 0x20 295#define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a 296 297struct usb_cdc_notification { 298 __u8 bmRequestType; 299 __u8 bNotificationType; 300 __le16 wValue; 301 __le16 wIndex; 302 __le16 wLength; 303} __attribute__ ((packed)); 304 305struct usb_cdc_speed_change { 306 __le32 DLBitRRate; /* contains the downlink bit rate (IN pipe) */ 307 __le32 ULBitRate; /* contains the uplink bit rate (OUT pipe) */ 308} __attribute__ ((packed)); 309 310/*-------------------------------------------------------------------------*/ 311 312/* 313 * Class Specific structures and constants 314 * 315 * CDC NCM NTB parameters structure, CDC NCM subclass 6.2.1 316 * 317 */ 318 319struct usb_cdc_ncm_ntb_parameters { 320 __le16 wLength; 321 __le16 bmNtbFormatsSupported; 322 __le32 dwNtbInMaxSize; 323 __le16 wNdpInDivisor; 324 __le16 wNdpInPayloadRemainder; 325 __le16 wNdpInAlignment; 326 __le16 wPadding1; 327 __le32 dwNtbOutMaxSize; 328 __le16 wNdpOutDivisor; 329 __le16 wNdpOutPayloadRemainder; 330 __le16 wNdpOutAlignment; 331 __le16 wNtbOutMaxDatagrams; 332} __attribute__ ((packed)); 333 334/* 335 * CDC NCM transfer headers, CDC NCM subclass 3.2 336 */ 337 338#define USB_CDC_NCM_NTH16_SIGN 0x484D434E /* NCMH */ 339#define USB_CDC_NCM_NTH32_SIGN 0x686D636E /* ncmh */ 340 341struct usb_cdc_ncm_nth16 { 342 __le32 dwSignature; 343 __le16 wHeaderLength; 344 __le16 wSequence; 345 __le16 wBlockLength; 346 __le16 wNdpIndex; 347} __attribute__ ((packed)); 348 349struct usb_cdc_ncm_nth32 { 350 __le32 dwSignature; 351 __le16 wHeaderLength; 352 __le16 wSequence; 353 __le32 dwBlockLength; 354 __le32 dwNdpIndex; 355} __attribute__ ((packed)); 356 357/* 358 * CDC NCM datagram pointers, CDC NCM subclass 3.3 359 */ 360 361#define USB_CDC_NCM_NDP16_CRC_SIGN 0x314D434E /* NCM1 */ 362#define USB_CDC_NCM_NDP16_NOCRC_SIGN 0x304D434E /* NCM0 */ 363#define USB_CDC_NCM_NDP32_CRC_SIGN 0x316D636E /* ncm1 */ 364#define USB_CDC_NCM_NDP32_NOCRC_SIGN 0x306D636E /* ncm0 */ 365 366#define USB_CDC_MBIM_NDP16_IPS_SIGN 0x00535049 /* IPS<sessionID> : IPS0 for now */ 367#define USB_CDC_MBIM_NDP32_IPS_SIGN 0x00737069 /* ips<sessionID> : ips0 for now */ 368#define USB_CDC_MBIM_NDP16_DSS_SIGN 0x00535344 /* DSS<sessionID> */ 369#define USB_CDC_MBIM_NDP32_DSS_SIGN 0x00737364 /* dss<sessionID> */ 370 371/* 16-bit NCM Datagram Pointer Entry */ 372struct usb_cdc_ncm_dpe16 { 373 __le16 wDatagramIndex; 374 __le16 wDatagramLength; 375} __attribute__((__packed__)); 376 377/* 16-bit NCM Datagram Pointer Table */ 378struct usb_cdc_ncm_ndp16 { 379 __le32 dwSignature; 380 __le16 wLength; 381 __le16 wNextNdpIndex; 382 struct usb_cdc_ncm_dpe16 dpe16[0]; 383} __attribute__ ((packed)); 384 385/* 32-bit NCM Datagram Pointer Entry */ 386struct usb_cdc_ncm_dpe32 { 387 __le32 dwDatagramIndex; 388 __le32 dwDatagramLength; 389} __attribute__((__packed__)); 390 391/* 32-bit NCM Datagram Pointer Table */ 392struct usb_cdc_ncm_ndp32 { 393 __le32 dwSignature; 394 __le16 wLength; 395 __le16 wReserved6; 396 __le32 dwNextNdpIndex; 397 __le32 dwReserved12; 398 struct usb_cdc_ncm_dpe32 dpe32[0]; 399} __attribute__ ((packed)); 400 401/* CDC NCM subclass 3.2.1 and 3.2.2 */ 402#define USB_CDC_NCM_NDP16_INDEX_MIN 0x000C 403#define USB_CDC_NCM_NDP32_INDEX_MIN 0x0010 404 405/* CDC NCM subclass 3.3.3 Datagram Formatting */ 406#define USB_CDC_NCM_DATAGRAM_FORMAT_CRC 0x30 407#define USB_CDC_NCM_DATAGRAM_FORMAT_NOCRC 0X31 408 409/* CDC NCM subclass 4.2 NCM Communications Interface Protocol Code */ 410#define USB_CDC_NCM_PROTO_CODE_NO_ENCAP_COMMANDS 0x00 411#define USB_CDC_NCM_PROTO_CODE_EXTERN_PROTO 0xFE 412 413/* CDC NCM subclass 5.2.1 NCM Functional Descriptor, bmNetworkCapabilities */ 414#define USB_CDC_NCM_NCAP_ETH_FILTER (1 << 0) 415#define USB_CDC_NCM_NCAP_NET_ADDRESS (1 << 1) 416#define USB_CDC_NCM_NCAP_ENCAP_COMMAND (1 << 2) 417#define USB_CDC_NCM_NCAP_MAX_DATAGRAM_SIZE (1 << 3) 418#define USB_CDC_NCM_NCAP_CRC_MODE (1 << 4) 419#define USB_CDC_NCM_NCAP_NTB_INPUT_SIZE (1 << 5) 420 421/* CDC NCM subclass Table 6-3: NTB Parameter Structure */ 422#define USB_CDC_NCM_NTB16_SUPPORTED (1 << 0) 423#define USB_CDC_NCM_NTB32_SUPPORTED (1 << 1) 424 425/* CDC NCM subclass Table 6-3: NTB Parameter Structure */ 426#define USB_CDC_NCM_NDP_ALIGN_MIN_SIZE 0x04 427#define USB_CDC_NCM_NTB_MAX_LENGTH 0x1C 428 429/* CDC NCM subclass 6.2.5 SetNtbFormat */ 430#define USB_CDC_NCM_NTB16_FORMAT 0x00 431#define USB_CDC_NCM_NTB32_FORMAT 0x01 432 433/* CDC NCM subclass 6.2.7 SetNtbInputSize */ 434#define USB_CDC_NCM_NTB_MIN_IN_SIZE 2048 435#define USB_CDC_NCM_NTB_MIN_OUT_SIZE 2048 436 437/* NTB Input Size Structure */ 438struct usb_cdc_ncm_ndp_input_size { 439 __le32 dwNtbInMaxSize; 440 __le16 wNtbInMaxDatagrams; 441 __le16 wReserved; 442} __attribute__ ((packed)); 443 444/* CDC NCM subclass 6.2.11 SetCrcMode */ 445#define USB_CDC_NCM_CRC_NOT_APPENDED 0x00 446#define USB_CDC_NCM_CRC_APPENDED 0x01 447 448#endif /* __UAPI_LINUX_USB_CDC_H */ 449